Roller apparatus for masticating plastic and like materials and for other purposes.



J. H. NUTTALL. ROLLE'R APPARATUS FOR MASHCATING PLASTIC AND LIKE MATERIALS AND FOR OTHER PURPOSES Patented Oct 3 1916 m ifm WW NV W N w wk WW Q $6 K w k% A 3 t I w \\\\\t m\\\\ W Mgwfi-Q .8. w a 1 m, L M\\\\Om\ M barren s'r rs PATENT OFFICE.

JAMES HENRY NUTTALL, OF MANCHESTER, ENGLAND.

ROLLER APPARATUS FOR MASTICATING PLASTIC A-ND LIKE MATERIALS AND FOR OTHER PURPOSES.

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Specification of Letters Patent.

Patented Oct. 3, 1916.

Application filed February 19, 1915. Serial No 9,442.

To all whom it may concern 7 Be it known that I, JAMEs 'HENRY Nur- TALL, subject of the King of Great Britain and Ireland, and resident of Heaton Chapel, Manchester, in the county .of Lancaster,

.England, have invented certain new and rollers for the aforesaid types of machines such as are referred to in my prior application for United States Patent Serial No. 843221 of 1914;, my present object being to provide improved arrangements or constructions of the rollers whereby their outer peripheries may be cooled or heated as may be required in accordance with the material which is being dealt with by them.

In my aforesaid application for patent I described an improved construction of roller which was hollow from end to end and provided internally for a certain portion of its length with a number of longitudinal and radially projecting ribs in conjunction with means for circulating a cooling or heating medium through the spaces between the ribs.

My present invention will be fully described with reference to the accompanying drawings in which Figure l is a front elevation, partly in section, showing one of the forms of construction which I adopt, Fig. 2 a transverse section on line 1, 2 of Fig. 1, Figs. 3 and 4.- and Figs. 5 and 6 similar views to those previously referred to of modified forms of the device, the sections being taken on line 3 and l and line 5 and 6 respectively.

In accordance with my invention and referring particularly to Figs. 1 and 2 I employ the same construction of roller as is mentioned in my earlier application for patent, that is to say, such roller comprises a central portion a and reduced portions 79 all arranged in one casting. The central portion a is hollow throughout and communicates with the hollow portions 0 formed in the ends Z). Such central portion is provided with longitudinal ribs cZ projecting inwardly and radially as will be seen from the cross section, such ribs enabling the outer shell of the roller to be made thinner and to allow of its being cooled orheated by passing a cooling or heating medium through the roller from either end in contact with them. 1

Figs. 3 and 4 show a similar arrangement ofroller to that already described but with the corners c at the junction between the central portion a and the ends Z) rounded off so as to provide passages f giving access from each end. The ribs J are arranged substantially in the manner hereinbefore described, but in conjunction with them I employ a solid core of wood 9 which is driven in tightly and is kept in position by (EXPHJF sion due to contact with water, steam or other cooling or heating medium and consequently any liquid or fluid passed through the roller must inevitably do so by way of the passages it between the ribs cl.

Figsj5 and 6 indicate a very similar arrangement of roller to that described in my aforementioned application for patent. It is constructed in substantially the same way as the roller shown in Figs. 1 and 2 and is provided with a head z fixed in the roller in the position shown having a central passage j communicating with a tube is as in my afore-mentioned application for patent and with radial passages j leading to one of the spaces or chambers h in each case. The head is also provided with radial and longitudinal passages on also in communication with other of the passages h. The roller is also provided internally with a central solid core 9 as in Figs. 3 and 4: and with transverse passages a one of which only is shown. The arrangement is such that the heating or cooling medium from each of the radial passages in the head is adapted to traverse backward and forward along three of the passages 72,, through the transverse passages a suitably arranged and then out through the passages m to the exterior of the tube 70 v ends but I prefer the wooden core as being the simplest and most efiicient arrangement for the purpose.

While in connection With Figs. 5 and 6 I have described a head and chamber arrangement to allow of three passages of the cooling or heating medium I Would nevertheless have it understood that the head and passages may be adapted to allow of the medium being circulated through as many pas sages as desired before being discharged from the roller though I expressly disclaim herein an arrangement of pairs of passages as this is already provided for in my application for patent hereinbefore mentioned.

, It Will be understood that in Figs. 1 and 2 What I claim as my invention and desire to secure by Letters Patent is A roller provided With a chamber having at its middle part a series of radial ribs Which form longitudinal channels, and a center core inserted in the said chamber and bearing against the tops of the said ribs and covering'the said channels for the greater part of their length, the said core being shorter than the said channels so that they communicate With the end portions of the said chamber.

In testimony whereof I have hereunto set my hand in the presence of two Witnesses.

JAMES HENRY NUTTALL. I

Witnesses:

WILLIAM H. TAYLoR, AMY E. Evms.

Copies of this patent may be obtained for five cents each, by addressing: the Commissioner of Patents. Washington, D. 0. 

